Video Library

Project-based video training & tutorials for building with AI.
Claude Code vs. Cursor vs. Codex: Cloud Agents Showdown
Cloud-based coding agents from Claude Code on the Web, Cursor Cloud Agents, and Codex all promise the same thing: kick off a task, walk away, and come back to a completed pull request. But do they actually deliver? And more importantly, which one fits into your real-world development workflow?
New
Agent OS v2 Demo
Agent OS v2 is here: It's my free, open-source system that trains your AI coding agents to build like YOU—with ANY AI tool (Claude Code, Cursor, Codex, Gemini, or any other). This is the official demo, walkthrough and overview of what's new in Agent OS V2.
New
3 New Features in Claude Code 2.0 I use DAILY
Claude Code 2.0 dropped with Sonnet 4.5, a VS Code extension, and new features. But I've been testing these updates in production for weeks to see what's actually useful for professional developers—not just demos. In this video, I share my honest impressions of what matters for building real products. I'll...
Builder Methods

Training & community for pro software developers building with AI.

Created by Brian Casel (that's me). I'm a career software developer, founder, and creator of Builder Methods and Agent OS, the system for spec-driven development with AI.

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